diff --git a/Lib/UserDict.py b/Lib/UserDict.py
index 5e97817..a786ae0 100644
--- a/Lib/UserDict.py
+++ b/Lib/UserDict.py
@@ -55,7 +55,7 @@
         if len(kwargs):
             self.data.update(kwargs)
     def get(self, key, failobj=None):
-        if not self.has_key(key):
+        if key not in self:
             return failobj
         return self[key]
     def setdefault(self, key, failobj=None):